1

很久之后,我下载了一个我共同开发的程序,并试图在我的 Ubuntu Linux 12.04 上重新编译它,但它似乎不再找到 math.h。这可能是因为最近发生了一些变化gcc,但我无法确定它是否有问题src/Makefile.am或缺少依赖项:

http://www.ub.edu/softevol/variscan/下载:

tar xzf variscan-2.0.2.tar.gz 
cd variscan-2.0.2/
make distclean
sh ./autogen.sh
make

我得到:[...]

gcc -DNDEBUG -O3 -W -Wall -ansi -pedantic  -lm  -o variscan variscan.o statistics.o common.o linefile.o memalloc.o dlist.o errabort.o dystring.o intExp.o kxTok.o pop.o window.o free.o output.o readphylip.o readaxt.o readmga.o readmaf.o readhapmap.o readxmfa.o readmav.o ran1.o swcolumn.o swnet.o swpoly.o swref.o  
statistics.o: In function `calculate_Fu_and_Li_D':
statistics.c:(.text+0x497): undefined reference to `sqrt'
statistics.o: In function `calculate_Fu_and_Li_F':
statistics.c:(.text+0x569): undefined reference to `sqrt'
statistics.o: In function `calculate_Fu_and_Li_D_star':
statistics.c:(.text+0x63b): undefined reference to `sqrt'
statistics.o: In function `calculate_Fu_and_Li_F_star':
statistics.c:(.text+0x75c): undefined reference to `sqrt'
statistics.o: In function `calculate_Tajima_D':
statistics.c:(.text+0x85d): undefined reference to `sqrt'
statistics.o:statistics.c:(.text+0xcb1): more undefined references to `sqrt' follow
statistics.o: In function `calcRunMode21Stats':
statistics.c:(.text+0xe02): undefined reference to `log'
statistics.o: In function `correctedDivergence':
statistics.c:(.text+0xe5a): undefined reference to `log'
statistics.o: In function `calcRunMode22Stats':
statistics.c:(.text+0x104a): undefined reference to `sqrt'
statistics.o: In function `calculate_Fu_fs':
statistics.c:(.text+0x11a8): undefined reference to `fabsl'
statistics.c:(.text+0x11ca): undefined reference to `powl'
statistics.c:(.text+0x11f2): undefined reference to `logl'
statistics.o: In function `calculateStatistics':
statistics.c:(.text+0x13f2): undefined reference to `log'
collect2: ld returned 1 exit status
make[1]: *** [variscan] Error 1
make[1]: Leaving directory `/home/avilella/variscan/latest/variscan-2.0.2/src'
make: *** [all-recursive] Error 1

这些库在那里是因为这个简单的示例运行良好:

$ gcc test.c -o test -lm
$ cat test.c 
#include <stdio.h>
#include <math.h>
int main(void)
{
        double x = 0.5;
        double result = sqrt(x);
        printf("The hyperbolic cosine of %lf is %lf\n", x, result);
        return 0;
}

有任何想法吗?

4

2 回答 2

3

该库需要放在编译器命令的末尾,就像您在简单示例中所做的那样:

gcc -DNDEBUG -O3 -W -Wall -ansi -pedantic -o variscan variscan.o statistics.o common.o linefile.o memalloc.o dlist.o errabort.o dystring.o intExp.o kxTok.o pop.o 窗口.o free.o output.o readphylip.o readaxt.o readmga.o readmaf.o readhapmap.o readxmfa.o readmav.o ran1.o swcolumn.o swnet.o swpoly.o swref.o statistics.o -lm

GCC 链接选项

-图书馆
-l 库
    链接时搜索名为 library 的库。
    (将库作为单独参数的第二种选择
    仅用于 POSIX 合规性,不推荐使用。)

    在命令中编写此选项的位置有所不同;
    链接器在
    它们被指定的顺序。
    因此,`foo.o -lz bar.o' 在文件 foo.o 之后搜索库 `z' 但是
    bar.o 之前 如果 bar.o 引用 `z' 中的函数,那些函数
    可能无法加载。
于 2012-07-09T15:18:02.897 回答
1

似乎这个简单的改变就足够了Makefile.am

+variscan_LDADD = -lm
-variscan_LDFLAGS = -lm
于 2012-07-09T16:25:13.320 回答